Top140 Simple Interest Questions For 100% Free [Effective]

Welcome to this guide on simple interest questions. For many, the topic of interest can be confusing, especially when diving into the world of finance. If you’ve ever wondered about simple interest questions or how to work with simple interest problems, you’re in the right place.

We frequently come across the word “interest” in our daily lives, especially when talking about money. There are different types of interests, with simple interest and compound interest being the most common. Through this article, we’ll be focusing extensively on simple interest questions and simple interest problems.

For those who prefer understanding in their native language, we’ve got simple interest questions in Hindi and the simple interest formula in Hindi. Our goal is to make simple interest in Hindi understandable for everyone.

But, what exactly is the simple interest formula? It’s a method used to figure out how much interest you’ll earn or owe over a period of time. The formula is straightforward: SI = PTR/100, where P is the Principal amount, T is the Time (in years), and R is the Interest rate.

Moreover, it’s essential to know that simple interest questions and simple interest and compound interest questions often appear in competitive exams. Whether it’s SSC, SBI, Railways, or any other state exams, mastering simple interest and compound interest questions can give you an edge. If you have a clear concept of ratio and percentage, you’ll find that tackling simple interest questions becomes much more manageable.

So, let’s dive deeper into simple interest questions and help you master the topic, whether in English or simple interest in Hindi. Happy learning!

Top140 Simple Interest Questions

21. The difference in simple interest on a certain sum at 7% per annum for 5 years and 6% per annum for 4 years is Rs. 550. Find the sum.

एक निश्चित राशि पर 7% प्रति वर्ष की दर से 5 वर्ष के साधारण ब्याज और 6% प्रति वर्ष की दर से 4 वर्ष के साधारण ब्याज का अंतर 550 रुपए है। योग ज्ञात कीजिए।


Option”A” is correct

Let the sum be Rs. x

According to problem,

⇒ x × 5 × 7/100 – x × 4 × 6/100 = 550

⇒ 0.35x – 0.24x = 550

⇒ x = 5000

∴ The sum is Rs. 5000.

22.Karim took some amount of money from Vishal at the rate of 10% per annum at simple interest for 3 years and lent it to Vikash at the rate of 15% per annum at simple interest for 3 years. If the total profit earned by Karim is Rs.3750, then what is the amount taken by Karim from Vishal?

करीम ने विशाल से 10% प्रति वर्ष की दर से 3 वर्षों के लिए साधारण ब्याज पर कुछ राशि लिया और 3 वर्ष के लिए साधारण ब्याज पर 15% प्रतिवर्ष की दर से विकास को उधार दिया। यदि करीम द्वारा अर्जित कुल लाभ 3750 रुपये है, तो करीम द्वारा विशाल से ली गई राशि कितनी है?


Option”A” is correct

Let Karim took Rs. x from Vishal.

So, the simple interest paid by Karim to Vishal = (x × 10 × 3)/100 = 3x/10

Simple interest paid by Vikash to Karim = (x × 15 × 3)/100 = 9x/20

According to question,

Profit of Karim is Rs. 3750

So, 9x/20 – 3x/10 = 3750

⇒ 3x/20 = 3750

⇒ x = Rs. 25000

∴ Karim took Rs. 25000 from Vishal.

23. A person invested two equal sums at 10% simple interest p.a. for 8 years and 10 years respectively. If the difference in interest earned is Rs. 200. Find the total sum invested by him in both the schemes.

एक व्यक्ति ने 10% साधारण ब्याज पर क्रमशः 8 वर्ष और 10 वर्ष के लिए दो समान राशि का निवेश किया। यदि अर्जित ब्याज में अंतर 200 रु है। उसके द्वारा दोनों योजनाओं में निवेशित राशि ज्ञात कीजिए।


Option”D” is correct

Let Principal be Rs. x.

According to the question

{(x × 10 × 10)/100} – {(x × 8 × 10)/100} = 200

⇒ {100x/(100)} – {80x/100} = 200

⇒ 20x/100 = 200

⇒ x = Rs. 1000

∴ Total sum invested in the scheme = 2 × 1000 = Rs 2000

24. A sum is invested at a simple interest. If the rate of interest is 20% per annum, then in how much time will it become double of itself?

कोई राशि साधारण ब्याज पर निवेश की जाती है। यदि ब्याज की दर 20% प्रति वर्ष है, तो कितने वर्ष में राशि स्वयं की दो गुनी हो जाएगी?


Option”A” is correct

Let the amount be p

⇒ Than simple interest = p

⇒ S.I. = PRT/100

⇒ p = [p × 20 × T]/100

⇒ 1 = T/5

⇒ T = 5 years

∴ It becomes double of itself in 5 years.

25. What is the maturity value of Rs.25000 at the end of 2 years at 9.25% simple interest?

9.25% के साधारण ब्याज पर 2 वर्षों के अंत में 25000 रुपये का परिपक्वता मूल्य कितना होगा ?


Option”A” is correct

As we know

Simple Interest = (Principal × Rate × time)/100

⇒ Simple Interest = (25000 × 9.25 × 2)/100

⇒ Simple Interest = Rs. 4625

Amount = Rs. 25000 + Rs. 4625

⇒ Rs. 29625.

∴ The maturity value is Rs. 29625.

26. A man deposited Rs. 12500 in two bank accounts each at simple interest. If the difference between the interests earned from two accounts after 5 years is Rs. 156.25, then find the difference between the rates of interest?

एक आदमी ने साधारण ब्याज पर दो बैंक खातों में 12500 रुपये जमा किए। यदि 5 वर्षों के बाद दो खातों से अर्जित ब्याज का अंतर 156.25 रुपये है, तो ब्याज दरों के बीच का अंतर ज्ञात कीजिए?


Option”D” is correct

Let the rate of interests be r1 and r2

⇒ 156.25 = (12500 × r1 × 5) /100 ~ (12500 × r2 × 5) /100

⇒ 156.25 = 625 (r1 ~ r2)

⇒ (r1 ~ r2) = 0.25

∴ Difference between the rates of interest is 0.25.

27.On a certain sum, simple interest for 5/2 years at an annual rate of 12% is Rs. 50 less than the interest on the same sum for 7/2 years at an annual rate of 10%. Find the sum.

एक निश्चित राशि पर 12% वार्षिक ब्याज की दर से 5/2 वर्षो में प्राप्त साधारण ब्याज, 10% वार्षिक ब्याज की दर से 7/2 वर्षो में समान राशि पर प्राप्त ब्याज से 50 रुपए कम है। तो राशि ज्ञात कीजिए। 


Option”B” is correct

Let, the sum = Rs. 100x

According to the question,

⇒ 100x × 7/2 × 10/100 – 100x × 5/2 × 12/100 = 50

⇒ 35x – 30x = 50

⇒ 5x = 50

⇒ x = 10

∴ The sum = Rs. 100 × 10 = Rs. 1000

28. A Sum of Rs. 1,250 amounts to Rs. 1,550 in 4 years. What is the simple interest rate? 

1,250 रुपए की एक राशि 4 वर्षो में 1,550 रुपए हो जाती है, तो साधारण ब्याज की दर क्या है?


Option”D” is correct

Let, rate of interest be r%

Interest earned = Rs (1550 – 1250) = Rs. 300

According to the question,

(1250 × 4 × r)/100 = 300

⇒ 5000r = 30000

⇒ r = 6

∴ Rate of interest = 6%

29.A sum of Rs. 10640 gives interest of Rs. 3724 in x years at 5% simple interest. What will be the value of x?

x वर्षों में 5% साधारण ब्याज पर 10640 रुपये की राशि 3724 रुपये का ब्याज देती है। x का मान क्या होगा?


Option”C” is correct

3724 = 10640 × 5 × (x)/100

⇒ x = 7448/1064

∴ x = 7 years

30. Sameer borrowed Rs.14000 at 15% per annum and Rs. 18000 at 11% per annum at simple interest. The total interest paid by him at the end of the two years will be (in rupees).

समीर 14000 रुपये 15% प्रति वर्ष की दर से और 18000 रुपये 11% प्रति वर्ष साधारण ब्याज पर उधार लिया। दो वर्ष के अंत में उसके द्वारा भुगतान किया गया कुल ब्याज (रुपये में) होगा।


Option”B” is correct

Simple interest1 = (14000 × 15 × 2)/100 = ₹4200

Simple interest2 = (18000 × 11 × 2) /100 = ₹3960

Total simple interest = ₹4200 + ₹3960 = ₹8160

∴ the required interest = ₹8160